CN101021888A

CN101021888A - Monitoring device and method for digital multimedia content playing

Info

Publication number: CN101021888A
Application number: CNA2007100382241A
Authority: CN
Inventors: 欧阳炳宇; 陆小潮
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-20
Filing date: 2007-03-20
Publication date: 2007-08-22
Anticipated expiration: 2027-03-20
Also published as: CN100561493C

Abstract

This invention discloses a monitor device for digital multimedia content play including a digital fingerprint pick-up module, a digital fingerprint transmission module and a receiving module, in which, said pick up module is connected with the transmission module in signals, which is connected with the receiving module in singals and the transmission and the receiving modules can be replaced with a digital fingerprint storage module. This invention also discloses a monitor method including: picking up digital fingerprint, transmitting or storing them then to identify and calculate them.

Description

Supervising device and method for supervising that digital multimedia content is play

Technical field

The present invention relates to the supervising device that a kind of digital multimedia content is play.The invention still further relates to the method for supervising that a kind of digital multimedia content that adopts this device to realize is play.

Background technology

Along with multimedia technology and improvement of computer science, the huge advantage of digital multimedia on producing, duplicating, propagate makes digital multimedia be applied to many emerging occasions rapidly.The medium producer and blazer use and control also and have higher requirement Digital Media.Such as, because the reduction of cost, advertising sector can be deep into the crowd and the place of segmentation, can be to the different location, and the people of different economic consumption abilities carries out advertisement targetedly simultaneously; And, wish that again each content time and number of times that broadcasts is able to record in the public occasion of broadcasting, with foundation as charge; Content Management mechanism also wish to spot-check at any time or real-time inspection whether whether numerous programs is that illegal content is being broadcast when playing; The advertisement buyer often wonders also whether whether the ad. craft sends to advertisement according to contract; And the owner of playback equipment may need also to know whether equipment is used to irrational broadcast and uses, and is working properly or the like.Therefore, use the crowd of broadcasting media medium, press for and to use low cost method to realize monitoring management content.Under the ability to communicate condition of limited, realize that automatic medium use monitoring to become more and more urgent.

The use of DRM (system for numeral copyright management) is at present also beginning to popularize, based on tradition and historical reasons.On using, the DRM system is conceived to prevent illegally play by uncommitted digital content, but not the process of playing is monitored; The DRM management system also can only be done prior coding and encryption to the program of also not making, and then has not been subjected to the management of DRM by the good content of other tool makings, can not be by all DRM system managements by the digital content that other DRM systems make.On realizing, the DRM system usually with the combination of optional network specific digit media coding mode, that is to say, not all multimedia form can both be generated and be managed by specific DRM system, because multimedia technology fast development, a kind of DRM management system is all media formatss of possibility simultaneous adaptation hardly, and it is also not enough to have difficulty and the economy of using many cover DRM in the multiple form playback equipment, and universal ability is just limited; The DRM system often realizes the copyright affirmation by real-time encrypted decrypting process simultaneously, this process often consumes ample resources, typically such as the MP3 player that has the copyright management ability when opening the copyright function, battery usually will shorten between 15%～20% service time.In addition, because present DRM management system and correlative coding device integrate, all need to pay and use, and scrambler is expensive, has also hindered to a certain extent and has been reluctant that the crowd who pays adopts DRM.

Just because of above-mentioned reason, DRM system that has realized at present and the monitoring that is not suitable for playing process.The occasion that the DRM technology all will adapt to the different multimedia form also is difficult to adapt to, and bigger resource occupation and complicacy have also improved cost.The monitoring statistics is broadcasted and is watched in similar advertisement, occasions such as commercial play number of times and coverage rate statistics, and it requires to have than big difference with the design original intention of DRM.Usually will watch to the consumer exactly such as advertisement but not stop illegal piracy, whom complete on time broadcast and the advertisement of playing at that time watched than judging that who has the power to see that advertisement is more valuable by to pay close attention to it; For some commercial play activity (such as movie theatre and Karaoke), use medium often earlier, it is more more reasonable than buying unlimited use earlier to press the access times paying more again, and DRM often is more suitable for first purchase, the unlimited again pattern of using; The constantly progress fast of multimedia technology, the consumer wishes always to enjoy the soonest the occasion of latest technological achievements, also usually can also not finish because of corresponding DRM technology, causes popularizing slowly.Therefore, the method that needs simple realization at present satisfies above requirement.

Now, for unique sign that obtains digital multimedia content, digital finger-print and correlation technique thereof are arisen at the historic moment.The digital digest algorithm usually is used for communication process and confirms whether both sides have obtained complete identical digital content.It is by specific algorithm, the numerical value that one piece of digital content or the file of random length and form can be drawn one section very little quantity of information, this hop count value and people's fingerprint is similar, can be also referred to as " digital finger-print " as by the uniqueness sign of summary numeral and content.As long as digital content of being made a summary or file have a point to change, the digital finger-print that digest algorithm comes out will great changes have taken place.In addition, digest algorithm has very strong nonreversibility, even if obtained digital finger-print, also knows digest algorithm, but also is to restore original digital content.Therefore have only both sides all to have complete digital content, just can obtain consistent " digital finger-print " by digest algorithm.The disclosed digital digest algorithm of at present using often in the world is MD5 algorithm and SHA algorithm.The length of the digital digest that draws is respectively 128 and 160, the latter particularly, the number of samples of digital content will also be Duoed than the sand number in the universe of having known and the situation of repetition just can be occurred making a summary in theory, therefore can regard the digital finger-print that can't repeat basically as.Because through behind the digest algorithm, the length of the digital content of random length summary is tens bytes, transmission and retrieval become very easy.And because digest algorithm can be file fragmentation summary continuously again, and one of design object is exactly little calculation resources, and the hardware and software resource that its needs is all few relatively.

Summary of the invention

Technical matters to be solved by this invention provides the supervising device that a kind of digital multimedia content is play, and can effectively monitor the digital multimedia content of being play, and implement simple, easy to utilize.Another technical matters to be solved by this invention provides the method for supervising that a kind of digital multimedia content is play, and its step is simple, and is easy to use.

For solving the problems of the technologies described above, the technical scheme of the supervising device that digital multimedia content of the present invention is play is, comprise digital finger-print extraction module, digital finger-print sending module and digital finger-print receiver module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print extraction module is connected with described digital finger-print sending module signal, and described digital finger-print sending module is connected with described digital finger-print receiver module signal.

The technical scheme of the method for supervising that the digital multimedia content that the present invention adopts said apparatus to realize is play is, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to the digital finger-print sending module with this digital finger-print, by described digital finger-print sending module this digital finger-print is sent to the digital finger-print receiver module afterwards, described digital finger-print receiver module receives this digital finger-print.

Another technical scheme of the supervising device that digital multimedia content of the present invention is play is, comprise the digital finger-print extraction module, digital finger-print identification module and digital finger-print memory module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print extraction module is connected with described digital finger-print identification module signal, described digital finger-print identification module is discerned statistics automatically to the digital finger-print that is extracted, described digital finger-print identification module is connected with described digital finger-print memory module signal, and described digital finger-print memory module is stored the statistics of described digital finger-print identification module to digital finger-print.

The technical scheme of the method for supervising that the digital multimedia content that the present invention adopts said apparatus to realize is play is, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to described digital finger-print identification module with this digital finger-print, described digital finger-print identification module is added up the broadcast information of the pairing digital multimedia content of this digital finger-print, and statistics is stored in the described digital finger-print memory module.

The another technical scheme of the supervising device that digital multimedia content of the present invention is play is, comprise digital finger-print extraction module and digital finger-print memory module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print is connected with described digital finger-print memory module signal.

The technical scheme of the method for supervising that the digital multimedia content that the present invention adopts said apparatus to realize is play is, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to the digital finger-print memory module with this digital finger-print, by described digital finger-print memory module this digital finger-print is stored afterwards.

A technical scheme again of the supervising device that digital multimedia content of the present invention is play is, comprise digital finger-print extraction module, digital finger-print identification module, digital finger-print sending module and digital finger-print receiver module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print extraction module is connected with described digital finger-print identification module signal, described digital finger-print identification module is connected with described digital finger-print sending module signal, and described digital finger-print sending module is connected with described digital finger-print receiver module signal.

The technical scheme of the method for supervising that the digital multimedia content that the present invention adopts said apparatus to realize is play is, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to described digital finger-print identification module with this digital finger-print, described digital finger-print identification module is added up the broadcast information of the pairing digital multimedia content of this digital finger-print, afterwards statistics is sent to described digital finger-print sending module, by described digital finger-print sending module this statistics is sent to the digital finger-print receiver module, described digital finger-print receiver module receives this statistics.

Supervising device and method for supervising that the present invention plays by above-mentioned digital multimedia content extract digital finger-print to the digital multimedia content of being play, and then digital finger-print are sent out or store, thereby realize digital multimedia content is monitored.Step of the present invention is simple, is easy to use, and popularizes easily.

Description of drawings

The present invention is further detailed explanation below in conjunction with drawings and Examples:

Fig. 1 is the modular structure figure of the supervising device of digital multimedia content broadcast of the present invention;

Fig. 2 and Fig. 3 extract the synoptic diagram of digital finger-print for adopting serial mode;

Fig. 4 is the synoptic diagram of existing digital multimedia content decoding;

Fig. 5 extracts the synoptic diagram of digital finger-print for adopting parallel mode;

Fig. 6 is the modular structure figure of another technical scheme of supervising device of digital multimedia content broadcast of the present invention;

Fig. 7 is the modular structure figure of the another technical scheme of supervising device of digital multimedia content broadcast of the present invention;

The supervising device that Fig. 8 plays for digital multimedia content of the present invention is the modular structure figure of a technical scheme again.

Embodiment

The invention provides the supervising device that a kind of digital multimedia content is play, as shown in Figure 1, comprise digital finger-print extraction module, digital finger-print sending module and digital finger-print receiver module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print extraction module is connected with described digital finger-print sending module signal, and described digital finger-print sending module is connected with described digital finger-print receiver module signal.

Described digital finger-print sending module is connected by the signal cable line with described digital finger-print receiver module.

Described digital finger-print sending module also can be connected by the mode of radio communication with described digital finger-print receiver module.

The supervising device that digital multimedia content of the present invention is play also comprises the digital finger-print identification module that the digital finger-print that is extracted is discerned automatically, and described digital finger-print receiver module is connected with described digital finger-print identification module signal.

Include the digital finger-print authentication module in the described digital finger-print identification module, store the pairing digital finger-print of digital multimedia content that allows broadcast in the described digital finger-print authentication module.

In addition, in the supervising device that digital multimedia content of the present invention is play, described digital finger-print extraction module also signal is connected with the digital finger-print authentication module, stores the pairing digital finger-print of digital multimedia content that allows broadcast in the described digital finger-print authentication module.

The present invention also provides a kind of said apparatus that adopts to realize the method for supervising that digital multimedia content is play, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to the digital finger-print sending module with this digital finger-print, by described digital finger-print sending module this digital finger-print is sent to the digital finger-print receiver module afterwards, described digital finger-print receiver module receives this digital finger-print.

Said digital finger-print among the present invention, refer to can with the unique corresponding a bit of identification data of digital multimedia content, this identification data can convert by digital multimedia content and obtain, and also can be that insertion one segment identification data artificial when making digital multimedia content are as digital finger-print.

Specifically, the extracting method of described digital finger-print is that digital multimedia content is converted by certain algorithm, obtains the very little data of quantity of information as digital finger-print.

MD5 algorithm or SHA algorithm are adopted in the extraction of described digital finger-print.This method has discreteness and nonreversibility preferably, is not easy to be maliciously tampered.

The extraction of described digital finger-print can be that the specific piece of digital content in the described digital multimedia content is converted, and obtains digital finger-print.Can reduce operand, conserve system resources like this.

In particular, described digital finger-print extraction module can be with regard to the isolated video content extracting section of digital multimedia code stream digital finger-print; Perhaps with regard to the isolated audio content extracting section of digital multimedia code stream digital finger-print; Perhaps extract digital finger-print with regard to the isolated control stream of digital multimedia code stream content part.

Another method is that described digital finger-print extraction module extracts before the step of digital finger-print described digital multimedia content, also is included in the step of inserting digital finger-print in the described digital multimedia content.When extracting digital finger-print, needn't convert like this, directly this digital finger-print be extracted just passable.This method can be saved the resource of system greatly.

As shown in Figure 2, described digital finger-print extracts the mode that adopts serial to extract, and earlier digital multimedia content is extracted digital finger-print, then this digital multimedia content is decoded, afterwards the digital multimedia content behind the output decoder.

In addition, be controlled at digital multimedia content and in the certain hour section, guarantee not distorted, and the occasion that the broadcast request continuity is high, then can only extract one time digital finger-print, when this media content of the unique affirmation of energy is repeated to play, the digital finger-print that extracts before then directly quoting is to save time and operand.

As shown in Figure 3, described digital finger-print extracts the mode that adopts serial to extract, and earlier digital multimedia content is decoded, and then this decoded digital multimedia content is extracted digital finger-print, the digital multimedia content behind the output decoder afterwards.

The mode that adopts above-mentioned serial to extract, the use of digital media data section still keeps, just the extraction operation of digital finger-print is inserted before the use of this digital media data section, perhaps be right after after the digital media data section is used, the digital finger-print of this data segment is carried out disposable extraction.The relative use time is short if digital finger-print extracts the running time, extracts operation so and just can not produce perceptible influence to the media play process.

Usually, the flow process that digital multimedia content is play can be as shown in Figure 4, and digital multimedia content is introduced into a buffer area with the form of medium code stream, be sent to demoder by buffer area afterwards, demoder is decoded according to user instruction, buffer area controlled, and with decoded content output.Like this, jumbo media data is play monitoring and just can be realized under very little software and hardware resources condition.

And among the present invention, described digital finger-print extracts the parallel mode of extracting that can also adopt, and as shown in Figure 5, the digital multimedia content that comes from the buffer memory transmission is divided into two-way, and one the tunnel decodes, the output of decoding back; Another road is used for extracting digital finger-print.

Parallel extraction method is suitable for and broadcasts and monitor the time requirement height, and needs monitoring to broadcast the occasion of integrity degree.Insert the structure that digital finger-print extracts, buffer memory reads in data from the outside equally under the control of demoder, and by the decoding requirement constantly the data of needs are sent into demoder, at this moment, these data are also sent into the digital finger-print extraction unit synchronously, the digital finger-print extraction unit then carries out the synchronous digital fingerprint to same data stream and extracts continuously, each action of demoder operational process is in case have influence on the code stream of sending into decoding unit, as the change of order change or Media Stream, corresponding change all can take place in the digital fingerprint value of digital finger-print extraction unit output.Therefore, the digital finger-print extraction unit is being monitored all processes of decoding process synchronously in real time.

Described digital finger-print receiver module receives after the described digital finger-print, this digital multimedia content is discerned by this digital finger-print by the digital finger-print authentication module in the described digital finger-print identification module, if a certain digital finger-print of storing in this digital finger-print and the described digital finger-print authentication module is complementary, do not forbid that then the pairing digital multimedia content of this digital finger-print plays; If any digital finger-print of storing in this digital finger-print and the described digital finger-print authentication module is not complementary, forbid that then the pairing digital multimedia content of this digital finger-print plays.

Also store the authority information that every pairing digital multimedia content of digital finger-print is play in the described digital finger-print authentication module, after a certain digital finger-print of storing in digital finger-print that is extracted and described digital finger-print authentication module is complementary, if if the pairing digital multimedia content of the digital finger-print that is extracted satisfies the content of described authority information, just allow the broadcast of this digital multimedia content, if, just forbid the broadcast of this digital multimedia content if the pairing digital multimedia content of the digital finger-print that multimedia is extracted does not satisfy the content of described authority information.Described authority information comprises the predetermined condition of contact of playing the moment, broadcasting time restriction and peripherals.Like this, described digital finger-print identification module can play the effect of play content remote monitoring.

The generation of digital finger-print among the present invention can be that system adopts specific algorithm computation to come out, and also can insert in digital multimedia content in advance.And the digital finger-print of storing in described digital finger-print authentication module is complete and correct digital finger-print.For example, digital finger-print is inserted in the time point specific in the digital multimedia content, and whole digital finger-print is exactly an array.If what play is legal content, the digital finger-print that prestores in digital finger-print of Ti Quing and the described digital finger-print authentication module then, just the content of this array is on all four, the digital finger-print that extracts just with the digital finger-print authentication module in the digital finger-print that prestores be complementary, so allow the broadcast of this digital multimedia content.If what play is illegal content, the digital finger-print that from illegal content, extracts just do not have with described array in data consistent, just digital finger-print of Ti Quing and the digital finger-print that pre-deposits in the digital finger-print authentication module do not match.And if a piece of digital content of multimedia is legal, just fail complete broadcast, so like this, the digital finger-print that extracts is consistent with the partial content in this array, just the digital finger-print of Ti Quing can mate with the digital finger-print that pre-deposits in the digital finger-print authentication module, therefore can think that this content is legal, allows its broadcast.

Described digital finger-print identification module carries out statistic record to the broadcast information of the pairing digital multimedia content of this digital finger-print.

Described broadcast information comprises the reproduction time of digital multimedia content, the integrity degree of broadcast frequency, broadcasting time and broadcast.

Described digital finger-print extraction module is after extracting digital finger-print, described digital finger-print authentication module is discerned this digital finger-print, if a certain digital finger-print of storing in this digital finger-print and the described digital finger-print authentication module is complementary, do not forbid that then the pairing digital multimedia content of this digital finger-print plays; If any digital finger-print of storing in this digital finger-print and the described digital finger-print authentication module is not complementary, forbid that then the pairing digital multimedia content of this digital finger-print plays.

Also store the authority information that every pairing digital multimedia content of digital finger-print is play in the described digital finger-print authentication module, after a certain digital finger-print of storing in digital finger-print that is extracted and described digital finger-print authentication module is complementary, if if the pairing digital multimedia content of the digital finger-print that is extracted satisfies the content of described authority information, just allow the broadcast of this digital multimedia content, if, just forbid the broadcast of this digital multimedia content if the pairing digital multimedia content of the digital finger-print that multimedia is extracted does not satisfy the content of described authority information.Described authority information comprises the predetermined condition of contact of playing the moment, broadcasting time restriction and peripherals.

The supervising device that digital multimedia content of the present invention is play can also adopt another kind of technical scheme, as shown in Figure 6, comprise the digital finger-print extraction module, digital finger-print identification module and digital finger-print memory module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print extraction module is connected with described digital finger-print identification module signal, described digital finger-print identification module is discerned statistics automatically to the digital finger-print that is extracted, described digital finger-print identification module is connected with described digital finger-print memory module signal, and described digital finger-print memory module is stored the statistics of described digital finger-print identification module to digital finger-print.

The present invention also provides a kind of said apparatus that adopts to realize the method for supervising that digital multimedia content is play, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to described digital finger-print identification module with this digital finger-print, described digital finger-print identification module is added up the broadcast information of the pairing digital multimedia content of this digital finger-print, and statistics is stored in the described digital finger-print memory module.

The extracting method of described digital finger-print is that digital multimedia content is converted by certain algorithm, obtains the very little data of quantity of information as digital finger-print.

MD5 algorithm or SHA algorithm are adopted in the extraction of described digital finger-print.This method has reliability and accuracy preferably, is not easy by malicious modification.

Perhaps, described digital finger-print extraction module extracts before the step of digital finger-print described digital multimedia content, also is included in the step of inserting digital finger-print in the described digital multimedia content.When extracting digital finger-print, needn't convert like this, directly this digital finger-print be extracted just passable.This method can be saved the resource of system greatly.

Described digital finger-print extracts and can also adopt the parallel mode of extracting, and as shown in Figure 5, the digital multimedia content that comes from the buffer memory transmission is divided into two-way, and one the tunnel decodes, the output of decoding back; Another road is used for extracting digital finger-print.

The supervising device that digital multimedia content of the present invention is play can also adopt the another kind of technical scheme of simplifying, as shown in Figure 7, comprise digital finger-print extraction module and digital finger-print memory module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print is connected with described digital finger-print memory module signal.

The supervising device that above-mentioned digital multimedia content is play is simple in structure, with low cost, makes easily.

The present invention also provides a kind of said apparatus that adopts to realize the method for supervising that digital multimedia content is play, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to the digital finger-print memory module with this digital finger-print, by described digital finger-print memory module this digital finger-print is stored afterwards.

The method for supervising that this digital multimedia content is play, step is simple, operation easily, for those real-times is not that very strong occasion is very suitable, the user can regularly read digital finger-print from described digital finger-print memory module, adopt other way that the broadcast information of digital multimedia content is added up afterwards.

The supervising device that digital multimedia content of the present invention is play can also adopt another technical scheme, as shown in Figure 8, comprise the digital finger-print extraction module, the digital finger-print identification module, digital finger-print sending module and digital finger-print receiver module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print extraction module is connected with described digital finger-print identification module signal, described digital finger-print identification module is connected with described digital finger-print sending module signal, and described digital finger-print sending module is connected with described digital finger-print receiver module signal.

Described digital finger-print identification module also signal is connected with the digital finger-print memory module.

The present invention also provides a kind of said apparatus that adopts to realize the method for supervising that digital multimedia content is play, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to described digital finger-print identification module with this digital finger-print, described digital finger-print identification module is added up the broadcast information of the pairing digital multimedia content of this digital finger-print, afterwards statistics is sent to described digital finger-print sending module, by described digital finger-print sending module this statistics is sent to the digital finger-print receiver module, described digital finger-print receiver module receives this statistics.

Described digital finger-print identification module also sends the statistics of digital finger-print to described digital finger-print memory module.If communicating by letter between described digital finger-print sending module and the described digital finger-print receiver module broken down, make the digital finger-print statistical information to be sent out, also can store the backup of this statistical information in the then described digital finger-print memory module, improve the reliability of system greatly.

Modern medium technique, often realize the multifunctionality that media content uses with multi-level data structure, therefore, in manufacturing process, utilize and use a plurality of or multiple digital finger-print in the data structure of different levels, cover different data segments, just can realize the needs of multiple monitoring level of while and purpose.

After digital finger-print can be extracted, can store or communication by actual demand.For example, can store in the concentrated area, be applicable to the statistics occasion that real-time is not strong; Can be stored on request on the different media, perhaps the diverse location of same media is inquired about for different monitor staff; All digital finger-prints all can be stored, also can partly store, part is transmitted by means of communication; Can be with digital finger-print transmission centralized management; Also digital finger-print can be classified, send to different supervisors respectively; Same fingerprint can also be transferred to different take over partys simultaneously; Can store and transmit all digital fingerprint value, also can handle some part wherein on demand; The method of real-time communication transmission can be adopted, also non real-time means of communication can be adopted, network, wired, the wireless media that waits can be used as transmission medium.

After obtaining media data digital fingerprint value in use, then can check and judge broadcast: for the little occasion of the data volume of digital fingerprint value in order to following method, can in advance all digital fingerprint value that will judge all be stored, when obtaining the digital fingerprint value of extracting when medium use, comparing one by one and mating, if mate, illustrate that then medium have used corresponding data.Because the uniqueness of digital fingerprint value, it can be used as the key assignments of data base querying to quicken query script, and this decision procedure is fit to the accuracy of broadcast content is judged; To the digital fingerprint value variation range may be bigger occasion, the occasion of simultaneous extraction for example, then can judge that end uses same digital finger-print to extract equipment same content is carried out same simulation broadcast and leaching process, judge that end constantly extracts digital finger-print and the digital fingerprint value comparison that has obtained, if the coupling of discovery, then simulate the moment that the detected just equipment of the time point that broadcasts broadcasted and extracted corresponding digital finger-print, if whole process does not all match, then change has taken place in the content of explanation broadcast.This decision procedure can be judged simultaneously to process, accuracy and the integrality broadcasted.

The use of above digital finger-print is being used for certain content, number of times statistics, ad playing machine situation normally whether, whether playing process the monitoring of complete grade, except implementing supervise in real time or afterwards to playing process, digital finger-print also can be used for Play Control.Because the digital fingerprint value data volume is little, therefore, digital fingerprint value can be write down or is transferred to playback equipment in advance, whether and in advance playback equipment extracts its digital finger-print in advance before broadcasting digital media content, and check its digital fingerprint value coupling of record, if the refusal that all matches is then play, if coupling is then play, so just realized Play Control, and irrelevant with the media data format of playing, help promoting.

The present invention can be applicable to the monitor procedure of ad playing.In the ad playing monitor procedure, tend to relate to following monitoring content: whether the advertisement that the buyer of advertisement often needs to monitor oneself has reached the rate of sending to and the coverage rate of appointment in the address of the time of appointment appointment; Advertising operator then needs to monitor each chain terminal and whether is broadcasting up-to-date advertisement, and the content of playing is not replaced or additions and deletions privately; The guardian of ad playing machine then needs to know whether each terminal in operate as normal, and utilization rate how, and which advertisement terminal need be keeped in repair or change.So the monitored results that the ad playing machine produces need be received by different people based on business reason probably, and these people can add the mark of oneself for the monitoring purposes that confirms oneself in the program of playing.Therefore, making and broadcast link at program, utilize the characteristic of " digital finger-print ", following realization can be arranged: for example, with the DVD form is the ad playing machine of media, all ad contents all are made into a DVD dish, and the buyer of advertisement often only is concerned about time, frequency and the number of times of the ad playing of oneself; To the advertisement operation dealer, then changed or replaced than being concerned about that the DVD dish of making does not have; To the guardian of ad playing machine, then be concerned about when correctly start and close of machine, to save machine consumption, have or not mechanical disorder etc.After making the DVD dish, the digital finger-print of the data segment of each advertisement is stored in the described digital finger-print authentication module in advance.When playing a certain advertisement, described digital finger-print extraction module extracts this digital finger-print, by described digital finger-print authentication module this digital finger-print is discerned.If a certain the digital finger-print that prestores in this digital finger-print and the described digital finger-print authentication module is consistent, then whether allow this advertisement to play by the decision of the authority information in the described digital finger-print authentication module; All digital finger-prints that prestore in this digital finger-print and the described digital finger-print authentication module are all inconsistent, illustrate that then this content should not be played, and the ad playing machine is forbidden the broadcast of this content.Described afterwards digital finger-print can be sent to the guardian of ad buyer, advertisement operation dealer and ad playing machine, after receiving this digital finger-print, described digital finger-print identification module is added up and is stored the broadcast information such as reproduction time, broadcast frequency and broadcasting time of this section advertisement, ad buyer can know that whether the advertisement of oneself is by the broadcast of capacity on time, the advertisement operation dealer can this as foundation to ad buyer charge, and the guardian of ad playing machine can learn whether the work of ad playing machine normal.If do not include the digital finger-print authentication module on the ad playing machine, described digital finger-print identification module also can be discerned digital finger-print, if the digital finger-print of the content that the digital finger-print of the content of being play can't broadcast with hope is corresponding, described digital finger-print identification module can be controlled the ad playing machine and forbid playing current content.

If the requirement to real-time is not very high, after extracting digital finger-print, the digital finger-print identification module can be set on the ad playing machine, pairing advertisement is added up to digital finger-print, and statistical framework is recorded on the digital finger-print memory module.Described digital finger-print memory module can adopt storage mediums such as SD card or flash memory, advertisement buyer and advertisement operation dealer regularly or not timing check the statistic record of storing on the digital finger-print memory module, thereby learn the broadcast situation of advertisement.

Usually advertisement playing device is play in certain sequence one by one.And playing process is usually finished by the software and hardware action command that a large amount of machines are carried out, and in the equipment work process, the software and hardware course of action that has can be intervened, and can interrupt replying execution again, such as the process of waiting for user's operation; What have but can not be cut apart by manual intervention, or all finishes continuously, or does not all finish, its purpose is for after some specific process must finish, subsequent action could begin, and such as an images or whole decoding and displaying, or does not just show.In terms of software, the latter usually is called as " atomic operation ", promptly indivisible operation.Therefore, as long as digest algorithm is added in the middle of " atomic operation " in each stage, the digest value of each playing process or digital finger-print just can be obtained on the principle, finish stage or performance level with each that identifies playing process.

Therefore, when new DVD CD is inserted into the ad playing machine, before just will having play, inserting an atomic operation earlier comes whole optical disc data carried out digest algorithm, " digital finger-print " of calculating sent to the ad. craft, so, the ad. craft will know whether this ad playing machine has play correct CD." if digital finger-print " mistake, or content is replaced, or the playback equipment correctly reading of content of makeing mistakes.And enter when playing link, advertisement of the every broadcast of ad playing machine, just recomputate " digital finger-print " of this advertisement, and the digital finger-print that will go up an advertisement under broadcasting before the bar advertisement is dealt into the advertisement buyer, like this, in case the digital finger-print that this advertisement buyer holds with send consistent, illustrate that then the advertisement that the advertisement buyer needs just has been played once.Certainly, this process is carried out before also being inserted into this ad playing, to remind the advertisement buyer that this advertisement is broadcasted.In addition, can also comprise the information that some are not played owing to gone out each bar advertisement content in the DVD dish, such as the video backhaul information, video synchronizing information, some other signals such as copyright or the like, the existence of these information not necessarily influences the broadcast process, but can be got by ad playing is machine-readable, so when reading these information, the digital finger-print of these information calculated send to the guardian, the guardian just can judge whether this equipment has normally moved by these fingerprints at set intervals so.But not the particular advertisement player is when putting this DVD CD such as the common DVD machine sowing, and this CD still can be play, but can't export corresponding digital finger-print constantly in correspondence.Guaranteed that like this advertisement operation dealer has accurately added up advertisement broadcast amount and time.The ad playing machine generates and transmits digital finger-print in this manner, can make various aspects can independently obtain the content that oneself will monitor and the less influence that is subjected to palming off monitor message.Strengthened advocate peace trust between the operating personnel of advertisement buyer, advertising.

Accordingly, in the manufacturing process of ad content, this three can produce relatively independent influence to the digital finger-print of self being concerned about.For example; the advertisement buyer usually can hold the unpressed advertisement master tape that shooting is finished; the advertisement buyer can be provided with certain compression parameters in the disc making process so; such as information such as compressibility, visual frame per second compression level and compositions; can also the date will be made; non-broadcast information such as signature adds the digital code stream behind the coding; because the characteristic of digest algorithm is exactly a little change can make the digital finger-print result great changes will take place, this digital finger-print that makes this advertisement obtain when broadcasting is easy to distinguish with approximate code stream.And plant maintenance person or advertiser can all be integrated into all advertisements on the DVD dish, they also can be provided with some other parameters, as file header, file name, video synchronizing information etc., these information not necessarily can both directly be seen by spectators, but the moment and the result that can produce the digital finger-print that they need separately also produce appreciable impact.Thereby, in fact in the playing process of advertising media, each having the digital finger-print that has nothing in common with each other and produced and send, each recipient independently receives and monitors, and can unify record.

Can designation number except manufacturing process fingerprint generation and use with the watch-dog action, playback equipment can also be finished monitoring to artificial process action with regard to other purposes.Play by beholder's control or selection often such as the advertisement playing device that has, this moment, the ad. craft often was concerned about that the viewed person of what advertisement paid close attention to, therefore, digest algorithm often just is inserted in the atomic operation of playing before finishing, after having only this promotional literature by complete broadcast so, digital fingerprint value just is recorded or sends back monitoring client.

In addition, also exist play content to be interrupted or switch the monitored needs of occasion needs, then can be after receiving user's interruption or switching command, insert corresponding digest algorithm before carrying out this instruction, make that the content only be played is made a summary, obtain this moment so and the digital finger-print that writes down just corresponding unique interrupted broadcasts moment.Monitoring client is by carrying out digest algorithm again, in position that corresponding fingerprint produces point with regard to mark the playing process position that is interrupted or switches.Certainly, digest algorithm is except can carry out in advance or afterwards, produce outside the less calculation resources, the unfixing or very huge occasion for data volume, data sementation can be made a summary, and with the parameter of each piece of digital fingerprint as following one piece of data digest algorithm, the broadcast of data is used and is just carried out synchronously with digest algorithm like this.Take place constantly when the user operates or intervenes, corresponding atomic operation only needs to get final product with the current fingerprint recording that obtains or by the means of communication transmission.The position of the generation of each step user intervention operation can both be identified uniquely like this.Playing programs is interrupted or switches also and arrived with regard to monitored so.

The present invention also goes for the broadcasting time and the legitimacy monitoring of commercial play occasion.At first, set up the song database of unified legal form, open to all show business operators by network, the operator can all songs of free download.When song is played, " digital finger-print " of song is extracted, and return by communication network, the supvr is according to contrasting " digital finger-print ", which head is the song that just can know present broadcast be, whether in legal publication scope, and count frequency and the total amount that every first song is used, as the foundation of collecting the copyright license fee.In like manner, the commercial play of digital movie also can be monitored in a like fashion.And the beaming back or stored record of a large amount of unknown " digital finger-print ", just mean that piracy or illegal content are used in a large number, and according to the fingerprint recording of pirate content, when tracing, not only can point out out unique pirate content, all be identified because of unique performance of file or data by pirate trespasser, infringement number of times and making source.

Learn that by above-mentioned realization above-mentioned implementation method also can be continued to use in the player that can play a plurality of data or file simultaneously.Corresponding digest algorithm can be before and after data be used or in the middle of carry out.And also can inserting the link of the required monitoring of each corresponding playing flow, the atomic operation of data fingerprint being obtained and write down transmission carries out.Also just realized the monitoring of multifile or multiple data stream playing process simultaneously.

Claims

1. the supervising device play of a digital multimedia content, it is characterized in that, comprise digital finger-print extraction module, digital finger-print sending module and digital finger-print receiver module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print extraction module is connected with described digital finger-print sending module signal, and described digital finger-print sending module is connected with described digital finger-print receiver module signal.

2. the supervising device that digital multimedia content according to claim 1 is play is characterized in that described digital finger-print sending module is connected by the signal cable line with described digital finger-print receiver module.

3. the supervising device that digital multimedia content according to claim 1 is play is characterized in that described digital finger-print sending module is connected with the mode of described digital finger-print receiver module by radio communication.

4. the supervising device that digital multimedia content according to claim 1 is play, it is characterized in that, also comprise the digital finger-print identification module that the digital finger-print that is extracted is discerned automatically, described digital finger-print receiver module is connected with described digital finger-print identification module signal.

5. the supervising device that digital multimedia content according to claim 4 is play, it is characterized in that, include the digital finger-print authentication module in the described digital finger-print identification module, store the pairing digital finger-print of digital multimedia content that allows broadcast in the described digital finger-print authentication module.

6. one kind is adopted the described device of claim 1 to realize the method for supervising that digital multimedia content is play, it is characterized in that, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to the digital finger-print sending module with this digital finger-print, by described digital finger-print sending module this digital finger-print is sent to the digital finger-print receiver module afterwards, described digital finger-print receiver module receives this digital finger-print.

7. the method for supervising that digital multimedia content according to claim 6 is play, it is characterized in that, described digital finger-print receiver module receives after the described digital finger-print, this digital multimedia content is discerned by this digital finger-print by the digital finger-print authentication module in the described digital finger-print identification module, if a certain digital finger-print of storing in this digital finger-print and the described digital finger-print authentication module is complementary, do not forbid that then the pairing digital multimedia content of this digital finger-print plays; If any digital finger-print of storing in this digital finger-print and the described digital finger-print authentication module is not complementary, forbid that then the pairing digital multimedia content of this digital finger-print plays.

8. the method for supervising that digital multimedia content according to claim 7 is play, it is characterized in that, also store the authority information that every pairing digital multimedia content of digital finger-print is play in the described digital finger-print authentication module, after a certain digital finger-print of storing in digital finger-print that is extracted and described digital finger-print authentication module is complementary, if if the pairing digital multimedia content of the digital finger-print that is extracted satisfies the content of described authority information, just allow the broadcast of this digital multimedia content, if, just forbid the broadcast of this digital multimedia content if the pairing digital multimedia content of the digital finger-print that multimedia is extracted does not satisfy the content of described authority information.

9. the method for supervising that digital multimedia content according to claim 8 is play is characterized in that, described authority information comprises the predetermined condition of contact of playing the moment, broadcasting time restriction and peripherals.

10. the method for supervising that digital multimedia content according to claim 6 is play is characterized in that described digital finger-print identification module carries out statistic record to the broadcast information of the pairing digital multimedia content of this digital finger-print.

11. supervising device that digital multimedia content is play, it is characterized in that, comprise the digital finger-print extraction module, digital finger-print identification module and digital finger-print memory module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print extraction module is connected with described digital finger-print identification module signal, described digital finger-print identification module is discerned statistics automatically to the digital finger-print that is extracted, described digital finger-print identification module is connected with described digital finger-print memory module signal, and described digital finger-print memory module is stored the statistics of described digital finger-print identification module to digital finger-print.

12. one kind is adopted the described device of claim 11 to realize the method for supervising that digital multimedia content is play, it is characterized in that, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to described digital finger-print identification module with this digital finger-print, described digital finger-print identification module is added up the broadcast information of the pairing digital multimedia content of this digital finger-print, and statistics is stored in the described digital finger-print memory module.

13. supervising device that digital multimedia content is play, it is characterized in that, comprise digital finger-print extraction module and digital finger-print memory module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print is connected with described digital finger-print memory module signal.

14. one kind is adopted the described device of claim 13 to realize the method for supervising that digital multimedia content is play, it is characterized in that, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to the digital finger-print memory module with this digital finger-print, by described digital finger-print memory module this digital finger-print is stored afterwards.

15. supervising device that digital multimedia content is play, it is characterized in that, comprise digital finger-print extraction module, digital finger-print identification module, digital finger-print sending module and digital finger-print receiver module, described digital finger-print extraction module can extract digital finger-print from the digital multimedia content of playing, described digital finger-print extraction module is connected with described digital finger-print identification module signal, described digital finger-print identification module is connected with described digital finger-print sending module signal, and described digital finger-print sending module is connected with described digital finger-print receiver module signal.

16. the supervising device that digital multimedia content according to claim 15 is play is characterized in that described digital finger-print sending module is connected by the signal cable line with described digital finger-print receiver module.

17. the supervising device that digital multimedia content according to claim 15 is play is characterized in that described digital finger-print sending module is connected with the mode of described digital finger-print receiver module by radio communication.

18. the supervising device that digital multimedia content according to claim 16 is play is characterized in that described digital finger-print identification module also signal is connected with the digital finger-print memory module.

19. supervising device according to claim 1 or 11 or 13 or 15 described digital multimedia contents broadcasts, it is characterized in that, described digital finger-print extraction module also signal is connected with the digital finger-print authentication module, stores the pairing digital finger-print of digital multimedia content that allows broadcast in the described digital finger-print authentication module.

20. one kind is adopted the described device of claim 15 to realize the method for supervising that digital multimedia content is play, it is characterized in that, at first the digital finger-print extraction module extracts digital finger-print to described digital multimedia content, described then digital finger-print extraction module is sent to described digital finger-print identification module with this digital finger-print, described digital finger-print identification module is added up the broadcast information of the pairing digital multimedia content of this digital finger-print, afterwards statistics is sent to described digital finger-print sending module, by described digital finger-print sending module this statistics is sent to the digital finger-print receiver module, described digital finger-print receiver module receives this statistics.

21. the method for supervising that digital multimedia content according to claim 20 is play is characterized in that described digital finger-print identification module also sends the statistics of digital finger-print to described digital finger-print memory module.

22. method for supervising according to claim 6 or 12 or 14 or 20 described digital multimedia contents broadcasts, it is characterized in that, the extracting method of described digital finger-print is that digital multimedia content is converted by certain algorithm, obtains the very little data of quantity of information as digital finger-print.

23. the method for supervising that digital multimedia content according to claim 22 is play is characterized in that, MD5 algorithm or SHA algorithm are adopted in the extraction of described digital finger-print.

24. the method for supervising that digital multimedia content according to claim 22 is play is characterized in that the extraction of described digital finger-print is that the specific piece of digital content in the described digital multimedia content is converted, and obtains digital finger-print.

25. the digital finger-print extracting method that digital multimedia content according to claim 24 is play is characterized in that, with regard to the isolated video content extracting section of digital multimedia code stream digital finger-print.

26. the digital finger-print extracting method that digital multimedia content according to claim 24 is play is characterized in that, with regard to the isolated audio content extracting section of digital multimedia code stream digital finger-print.

27. the digital finger-print extracting method that digital multimedia content according to claim 24 is play is characterized in that, extracts digital finger-print with regard to the isolated control stream of digital multimedia code stream content part.

28. method for supervising according to claim 6 or 12 or 14 or 20 described digital multimedia contents broadcasts, it is characterized in that, described digital finger-print extraction module extracts before the step of digital finger-print described digital multimedia content, also is included in the step of inserting digital finger-print in the described digital multimedia content.

29. method for supervising according to claim 6 or 12 or 14 or 20 described digital multimedia contents broadcasts, it is characterized in that, described digital finger-print extracts the mode that adopts serial to extract, earlier digital multimedia content is extracted digital finger-print, then this digital multimedia content is decoded, afterwards the digital multimedia content behind the output decoder.

30. method for supervising according to claim 6 or 12 or 14 or 20 described digital multimedia contents broadcasts, it is characterized in that, described digital finger-print extracts the mode that adopts serial to extract, earlier digital multimedia content is decoded, then this decoded digital multimedia content is extracted digital finger-print, the digital multimedia content behind the output decoder afterwards.

31. method for supervising according to claim 6 or 12 or 14 or 20 described digital multimedia contents broadcasts, it is characterized in that described digital finger-print extracts the parallel mode of extracting that adopts, the digital multimedia content that comes from the buffer memory transmission is divided into two-way, one the tunnel decodes, the output of decoding back; Another road is used for extracting digital finger-print.

32. method for supervising according to claim 6 or 12 or 14 or 20 described digital multimedia contents broadcasts, it is characterized in that, described digital finger-print extraction module is after extracting digital finger-print, described digital finger-print authentication module is discerned this digital finger-print, if a certain digital finger-print of storing in this digital finger-print and the described digital finger-print authentication module is complementary, do not forbid that then the pairing digital multimedia content of this digital finger-print plays; If any digital finger-print of storing in this digital finger-print and the described digital finger-print authentication module is not complementary, forbid that then the pairing digital multimedia content of this digital finger-print plays.

33. the method for supervising that digital multimedia content according to claim 32 is play, it is characterized in that, also store the authority information that every pairing digital multimedia content of digital finger-print is play in the described digital finger-print authentication module, after a certain digital finger-print of storing in digital finger-print that is extracted and described digital finger-print authentication module is complementary, if if the pairing digital multimedia content of the digital finger-print that is extracted satisfies the content of described authority information, just allow the broadcast of this digital multimedia content, if, just forbid the broadcast of this digital multimedia content if the pairing digital multimedia content of the digital finger-print that multimedia is extracted does not satisfy the content of described authority information.

34. the method for supervising that digital multimedia content according to claim 33 is play is characterized in that, described authority information comprises the predetermined condition of contact of playing the moment, broadcasting time restriction and peripherals.

35. the method for supervising according to claim 10 or 12 or 20 described digital multimedia contents broadcasts is characterized in that, described broadcast information comprises the reproduction time of digital multimedia content, the integrity degree of broadcast frequency, broadcasting time and broadcast.